It is a one sample test T- test , you need to make a questions based on diz image

EXAMPLE QUESTIONS :

A random sample of 22 students are asked how much they spend for a meal during weekdays only 17 answered the question since they are the only who buy meals at the canteen. The average expense is found to be Php 25.18 and the given standard deviation 5.22. The level of significance is 5%

it was like this but my work doesn't seem to match my prof said

Number of students Scores 1 30 2 27 3 18 D 24 21 27 15 8 27 CO 27 10 27 11 14 12 30 13 30 14 30 15 27 16 30 17 24 parameter: 22 sample mean: 25. 18 standard deviation 5.22